Anyone know of PPP conflicts between IOS 11.x & 12.x ?

["Mr. James W. Laferriere" <babydr () baby-dragons com>]

        Hello All,  Sorry for the off topic .  But I can't seem
        to find anything (that I can get to) about conflicts 
        between 11.x & 12.x PPP implementations .  I have a
        customer running ios 11.1 sync serial encaps ppp & his
        provider that is running 12.04(?) with proper config
        on his end & his end of the link shows (supposedly)UP
        My end on the other hand show all signals UP but protocol
        down :-{ .   actually afaik the provider changed IOS
        version down one minor level (12.04 I beleive) & rebooted
        the system & the encaps just won't sync .  Tia,  JimL

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       | James   W.   Laferriere | System   Techniques | Give me VMS     |
       | Network        Engineer | 25416       22nd So |   Give me Linux |
       | babydr () baby-dragons com | DesMoines  WA 98198 |     only on AXP |
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